Ring rolling mill



Nov. 24, 1931. J. H. TAYLOR 1,833,097

RING ROLLING MILL Filed March 26, 1950 will l6 QQEW 555 72295 fi a/Z 5/0r Patented Nov. 24, 1931 UNITED STATES JI'AIMIES HALL TAYLOR, 01 OAKPARK, ILLINOIS RING ROLLING MILL Application filed March 26, 1930.

This invention relates to a ring rolling mill and concerns itself moreparticularly with the structure and arrangement of the rolls whereby thefin or fringe on the outer periphery is eliminated.

The invention comprises the novel structure and combination of partshereinafter described and more particularly pointed out and defined inthe appended claims.

In the accompanying drawings which illustrate certain preferred forms ofthis invention and in which similar reference numerals refer to similarfeatures in the different views:

Figure 1 is an elevational view of a plurality of rolls forming a ringpass and involving this invention.

Figure 2 is likewise an elevational view of a plurality of rollsdefining a ring pass 20 and illustrating a modified form of theinvention.

Figure 3 is a view similar to the foregoing illustrating a furthermodified form of the invention.

Figure 4 is a diagrammatic view illustrating the invention.

In the drawings, there is shown only the rolls that constitute the ringpass, and a portion of their shafts. It will be understood that therolls may be mounted in a machine according to well known practice.

In Figure 1, the ring pass is formed by an upper conical roll 1 having arear concave face 2, an exterior peripheral roll 3, a lower beveled roll4 and an interior peripheral roll 5 concentric with the roll 4 and of aflaring contour. The shaft 6 of the roll 1 is slightly inclined in adownward direction and the shaft 7 of the roll 4 is slightly inclinedfrom 4 the vertical to bring the bevel surface of the roll into asubstantially horizontal plane. These rolls form a closed ring passthrough which a ring 8 is shown passing. In the past, fins or fringeshave usually been formed upon the upper outer corner 9 of the ring andit was necessary to use fringe removing rolls to eliminate such fins orfringes. According to this invention the roll 1 is concave upon its rearface for receiving the upper edge of the roll 3 so that the rear edge 1aof the roll Serial No. 439,239.

1 Will overlap the outer edge of the ring and will roll down any fins orfringes that are formed.

In Figure 2, the roll 1 and the roll 3 are similar to the correspondingones in Figure 1. However the lower roll 10 is shown as having a flatface for engaging the ring and the interior cylindrical roll 11 is acontinuation of the shaft 12 which carries the roll 10 and which isvertically arranged.

In Figure 3. the upper roll 13 is stepped as indicatedat 14 for rollinga flange or rib on the ring 8a. In this form the exterior peripheralroll 3 is similar to the one in Figures 1 and 2. The lower roll 15however is of a. different character. It'is a freely floating roll thatis obliquely mounted upon a vertical shaft 16 as shown in my Patent No.1,7 26,77 7 the upper endof which serves as an interior roll 11 as inFigure 2. It will be noted that the roll 13 has a rear concave face 17afor receiving the upper edge of the roll 3 as in the other forms. i

It will be apparent that in accordance with this invention, separatefringe removing rolls are unnecessary for the outer fringes since theouter fringes on the ring are rolled down or smeared back by thereducing rolls that form the ring pass.

In referring to Figure 4, it will be noted that the ring 8 is shown incontact with the outer peripheral r0113 upon a line 17. The ellipse 18represents a projection. of therear edge 10. of the; upper roll upon ahorizontal plane. From the tangent line 17 the ellipse curves away fromthe ring 8. This indicates that the rear edge 1a of the upper rollextends slightly beyond the outer edge 19 of the ring upon each side ofthe tangent line and must roll down or smear back any fin or fringe thatis formed. Now if the rear edge 1a of the upper roll were bevelledforwardly as in the prior art, the roll would not overlap the outer edgeof the ring upon opposite sides of the line of tangency 17 with theresult that afringe or fin would be formed. r

It will therefore be appreciated that a novel construction has beenprovided for eliminating a fringe or fin from the upper outer edge ofthe ring.

I am aware that many changes may be made, and numerous details ofconstruction may be varied through a wide range without departing fromthe principles of this invention, and I therefore do not purposelimiting the patent granted hereon, otherwise than necessitated by theprior art.

I claim as my invention:

1. In a ring rolling mill, a lower roll, an upper conical roll having arear concave face, an exterior peripheral roll overlapping the concaveface of said conical roll and an interior peripheral roll, said conicalroll overlapping the outer edge of said ring upon opposite sides of theline of tangen'cy of said exterior peripheral roll.

2. In a ring rolling mill, a plurality of rolls forming a ring pass,including an upper conical roll having a concave face for receiving aportion of another roll, said conical roll overlapping the outer edge ofsaid ring upon opposite sides of the line of tangency of said other'roll and ring for rolling down the fringe.

3. Ina ring rolling mill, an upper conical rol-l having a downwardlyinclined axis and a rear bevelled face, an exterior peripheral rolladapted for overlapping the rear face of said conical roll, a lower rolland an interior peripheral roll, said rolls being mounted for adjustingthe pass formed thereby.

a. In a ring rolling mill, an upper conical roll having a downwardlyinclined axis and a rear concave face, an exterior peripheral rolloverlapping said concave face, a lower roll and an interior peripheralroll forming an adjustable pass and said conical roll overlapping theouter edge of said ring on opposite sides of the line of tangency ofsaid exterior peripheral roll with said ring.

5. In a ring rolling mill, a lower roll, an upper conical roll having arear concave face, an inclined shaft for supporting said conical roll,an exterior peripheral roll overlapping the concave face of said conicalroll and an internal peripheral roll, the relation of said conical rolland exterior peripheral roll being'such that said conical roll willobliterate or smear back any fringe formed on the outer and upper edgeof the ring.

6. In a ring rolling machine, a plurality of rolls defining a ring passincluding an upper conical roll having a rear concave face and aperipheral roll overlapping the concave face of said conical rollwhereby said conical roll will obliterate or smear back any fringeformed on the upper outer edge of the ring.

In testimony whereof I have hereunto subscribed my name at Chicago, CookCounty,

Illinois.

JAMES HALL TAYLOR.

